diff options
Diffstat (limited to 'src/parser/conversion')
| -rw-r--r-- | src/parser/conversion/block.rs | 51 |
1 files changed, 35 insertions, 16 deletions
diff --git a/src/parser/conversion/block.rs b/src/parser/conversion/block.rs index f3ef923..9abd1e4 100644 --- a/src/parser/conversion/block.rs +++ b/src/parser/conversion/block.rs @@ -15,35 +15,54 @@ use crate::parser::{ use super::inline::convert_inline; -pub fn convert_ssubel(pair: Pair<Rule>) -> Result<Option<c::StructuralSubElement>, Error> { - // TODO: This is just a proof of concept. Keep closely to DTD in final version! +#[derive(PartialEq)] +pub(super) enum TitleKind { Double(char), Single(char) } + +pub(super) enum TitleOrSsubel { + Title(e::Title, TitleKind), + Ssubel(c::StructuralSubElement), +} + + +pub(super) fn convert_ssubel(pair: Pair<Rule>) -> Result<Option<TitleOrSsubel>, Error> { + use self::TitleOrSsubel::*; Ok(Some(match pair.as_rule() { - Rule::title => convert_title(pair).into(), - Rule::paragraph => convert_paragraph(pair)?.into(), - Rule::target => convert_target(pair)?.into(), - Rule::substitution_def => convert_substitution_def(pair)?.into(), - Rule::admonition_gen => convert_admonition_gen(pair)?.into(), - Rule::image => convert_image::<e::Image>(pair)?.into(), + Rule::title => { let (t, k) = convert_title(pair); Title(t, k) }, + Rule::paragraph => Ssubel(convert_paragraph(pair)?.into()), + Rule::target => Ssubel(convert_target(pair)?.into()), + Rule::substitution_def => Ssubel(convert_substitution_def(pair)?.into()), + Rule::admonition_gen => Ssubel(convert_admonition_gen(pair)?.into()), + Rule::image => Ssubel(convert_image::<e::Image>(pair)?.into()), Rule::EOI => return Ok(None), rule => panic!("unknown rule {:?}", rule), })) } -fn convert_title(pair: Pair<Rule>) -> e::Title { +fn convert_title(pair: Pair<Rule>) -> (e::Title, TitleKind) { let mut title: Option<&str> = None; - let mut _adornment_char: Option<char> = None; - for p in pair.into_inner() { + let mut adornment_char: Option<char> = None; + // title_double or title_single. Extract kind before consuming + let inner_pair = pair.into_inner().next().unwrap(); + let kind = inner_pair.as_rule(); + for p in inner_pair.into_inner() { match p.as_rule() { - Rule::line => title = Some(p.as_str()), - Rule::adornments => _adornment_char = Some(p.as_str().chars().next().expect("Empty adornment?")), + Rule::line => title = Some(p.as_str()), // TODO: can contain other stuff? + Rule::adornments => adornment_char = Some(p.as_str().chars().next().expect("Empty adornment?")), rule => unimplemented!("Unexpected rule in title: {:?}", rule), }; } - // TODO adornment char - e::Title::with_children(vec![ + // now we encountered one line of text and one of adornments + // TODO: emit error if the adornment line is too short (has to match title length) + let elem = e::Title::with_children(vec![ title.expect("No text in title").into() - ]) + ]); + let title_kind = match kind { + Rule::title_double => TitleKind::Double(adornment_char.unwrap()), + Rule::title_single => TitleKind::Single(adornment_char.unwrap()), + _ => unreachable!(), + }; + (elem, title_kind) } |
